锆金属粉尘云的爆炸特性

发布时间：2018-05-20 04:09

本文选题：锆 + 粉尘云　；参考：《爆炸与冲击》2017年03期

【摘要】：采用20L近球形爆炸实验系统对锆粉尘云的爆炸特性开展了实验研究,分别分析了初始点火能量、点火延迟时间、粉尘云浓度3种因素对锆粉尘云爆炸强度的影响,揭示了锆粉尘云在密闭容器中的爆炸特性。在本实验条件下,结果表明:初始点火能量对锆粉尘云最大爆炸压力有显著影响,锆粉尘云最大爆炸压力随初始点火能量的增大而增大;随点火延迟时间的增加,锆粉尘云最大爆炸压力先增大后减小,存在最佳点火延迟时间;随粉尘云浓度的增大,锆粉尘云最大爆炸压力先增大后减小,存在最佳锆粉尘云浓度,得到锆粉尘云的爆炸下限为18~20g/m~3。
[Abstract]:The explosion characteristics of zirconium dust cloud were studied by using a 20L near-spherical explosion system. The effects of initial ignition energy, ignition delay time and dust cloud concentration on the explosion strength of zirconium dust cloud were analyzed. The explosion characteristics of zirconium dust cloud in a closed vessel are revealed. Under the experimental conditions, the results show that the initial ignition energy has a significant effect on the maximum explosion pressure of zirconium dust cloud, the maximum explosion pressure of zirconium dust cloud increases with the increase of initial ignition energy, and increases with the increase of ignition delay time. The maximum explosion pressure of zirconium dust cloud first increases and then decreases, and there is the best ignition delay time, and with the increase of dust cloud concentration, the maximum explosion pressure of zirconium dust cloud increases first and then decreases, and there is the best zirconium dust cloud concentration. The lower explosion limit of zirconium dust cloud is 1820 g / m ~ 3.
【作者单位】：西安科技大学安全科学与工程学院;西安科技大学陕西省煤火灾害防治重点实验室;
【基金】：国家重点研发计划项目(2016YFC0800102) 国家自然科学基金项目(51504190,51134019) 中国博士后科学基金项目(2013M530430) 陕西省教育厅专项科研计划项目(2013JK0947) 陕西省国际科技合作与交流计划项目(2016KW-070) 西安科技大学博士后启动金项目(2016QDJ013)
【分类号】：X932

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